From each set, choose the element with largest ionization enthalpy and explain your answer. (a) F, O, N (b) Mg, P, Ar (c) B, Al, Ga

From each set, choose the element with largest ionization enthalpy and explain your answer.
(a) F, O, N (b) Mg, P, Ar (c) B, Al, Ga
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Answer :

Ans.
(a). The element fluorine F has the largest ionization enthalpy because in general, it increases along the period. These elements belong to the second period in the order is: N, O, F. Therefore, the last element has the largest ionization enthalpy.
(b). The element argon (Ar) has the largest ionization enthalpy because it increases along a period and these elements belong to the third period in the order of: Mg, P, Ar. Moreover, Ar is also a noble gas element with very high ionization enthalpy.
(c). The element B has the largest ionization enthalpy because in general the value decreases down the group. All these elements belong to the group 13 in the order of B, Al, Ga. Therefore, the first element B is expected to have the largest value.
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